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Zurcon® U-Cup PUA
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Part No.
Installation dimensions
  • Inside Diameter ID
    mm
  • Outside Diameter OD
    mm
  • Groove section H1
    mm
  • Groove Width H2
    mm

Zurcon® U-Cup PUA

Zurcon® U-Cup is a single-acting piston seal available in a wide range of sizes and offered in high-performance polyurethane, Zurcon® Z20

Commercial Description

Zurcon® U-Cup is a single-acting piston seal available in a wide range of sizes and offered in high-performance polyurethane, Zurcon® Z20. The seal is mainly used in light-duty applications in mobile equipment and is well-suited to installation in closed grooves.

Installation & Handling

The U-Cup is a single acting piston seal out of injection molded polyurethane. It is provided with a robust dynamic sealing lip and a wide contact area of the static lip, which guarantees an effective positioning in the groove. The profile is suitable for pressures up to 40 MPa provided that the extrusion gap is adapted to the pressure level. Thanks to the elasticity of the polyurethane material the U-Cup can easily be installed in closed grooves.

Installation dimensions

Material Properties

  • Pressure : Up to 40 MPa Speed : Up to 0.5 m/s
  • Temperature : -30 °C to +110 °C
  • Media : Mineral oil based hydraulic fluids
  • Clearance : The maximum permissible radial clearance Smax is shown in the following Clearance table as a function of the operating pressure and functional diameter. 

 

Seal Capabilities

  • Simple groove design
  • High abrasion resistance
  • Long service life
  • Effective sealing effect even with sub-optimal mating surface finish 
Download Technical Details (PDF)
Part No. ID OD H1 H2 Quantity Pick
PUA900500-Z20 42.0 50.0 6.0
PUA800500-Z20 40.0 50.0 9.0
PUA400630-Z20 48.0 63.0 9.5
PUA400400-Z20 33.0 40.0 9.0
PUA400300-Z20 22.0 30.0 7.0
PUA301250-Z20 105.0 125.0 13.0
PUA300800-Z20 68.0 80.0 9.5
PUA300500-Z20 42.0 50.0 11.0
PUA300400-Z20 32.0 40.0 6.5
PUA201250-Z20 100.0 125.0 16.0
PUA201100-Z20 100.0 110.0 8.0
PUA200630-Z20 53.0 63.0 8.0
PUA200320-Z20 26.0 32.0 6.0
PUA101250-Z20 110.0 125.0 11.0
PUA101000-Z20 88.0 100.0 9.5
PUA100700-Z20 60.0 70.0 8.0
PUA100350-Z20 25.0 35.0 9.0
PUA001050-Z20 90.0 105.0 13.0
PUA000800-Z20 60.0 80.0 13.0
PUA000600-Z20 50.0 60.0 8.0
PUA000520-Z20 42.0 52.0 6.5
PUA000380-Z20 31.0 38.0 5.2
PUA000340-Z20 28.0 34.0 4.0
PUA000250-Z20 15.0 25.0 9.0
PUA000140-Z20 8.0 14.0 6.8